1 /* Startup code for gdbtk.
2 Copyright 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
4 Written by Stu Grossman <grossman@cygnus.com> of Cygnus Support.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
31 #include "tracepoint.h"
48 /* start-sanitize-ide */
52 /* end-sanitize-ide */
55 #ifdef ANSI_PROTOTYPES
65 #include <sys/ioctl.h>
66 #include "gdb_string.h"
75 #include <sys/cygwin.h> /* for cygwin32_attach_handle_to_fd */
78 /* For Cygwin, we use a timer to periodically check for Windows
79 messages. FIXME: It would be better to not poll, but to instead
80 rewrite the target_wait routines to serve as input sources.
81 Unfortunately, that will be a lot of work. */
82 static sigset_t nullsigmask
;
83 static struct sigaction act1
, act2
;
84 static struct itimerval it_on
, it_off
;
86 extern int Tktable_Init
PARAMS ((Tcl_Interp
*interp
));
88 static void gdbtk_init
PARAMS ((char *));
89 void gdbtk_interactive
PARAMS ((void));
90 static void cleanup_init
PARAMS ((int));
91 static void tk_command
PARAMS ((char *, int));
93 void gdbtk_add_hooks
PARAMS ((void));
94 int gdbtk_test
PARAMS ((char *));
97 * gdbtk_fputs is defined in the gdbtk_hooks.c, but we need it here
98 * because we delay adding this hook till all the setup is done. That
99 * way errors will go to stdout.
102 extern void gdbtk_fputs
PARAMS ((const char *, FILE *));
104 /* Handle for TCL interpreter */
105 Tcl_Interp
*gdbtk_interp
= NULL
;
107 static int gdbtk_timer_going
= 0;
109 /* linked variable used to tell tcl what the current thread is */
112 /* This variable is true when the inferior is running. See note in
113 * gdbtk.h for details.
117 /* This variable holds the name of a Tcl file which should be sourced by the
118 interpreter when it goes idle at startup. Used with the testsuite. */
119 static char *gdbtk_source_filename
= NULL
;
123 /* Supply malloc calls for tcl/tk. We do not want to do this on
124 Windows, because Tcl_Alloc is probably in a DLL which will not call
125 the mmalloc routines. */
131 return xmalloc (size
);
135 Tcl_Realloc (ptr
, size
)
139 return xrealloc (ptr
, size
);
149 #endif /* ! _WIN32 */
153 /* On Windows, if we hold a file open, other programs can't write to
154 * it. In particular, we don't want to hold the executable open,
155 * because it will mean that people have to get out of the debugging
156 * session in order to remake their program. So we close it, although
157 * this will cost us if and when we need to reopen it.
168 bfd_cache_close (o
->obfd
);
171 if (exec_bfd
!= NULL
)
172 bfd_cache_close (exec_bfd
);
178 /* TclDebug (const char *fmt, ...) works just like printf() but
179 * sends the output to the GDB TK debug window.
180 * Not for normal use; just a convenient tool for debugging
184 #ifdef ANSI_PROTOTYPES
185 TclDebug (const char *fmt
, ...)
192 char buf
[512], *v
[2], *merge
;
194 #ifdef ANSI_PROTOTYPES
195 va_start (args
, fmt
);
199 fmt
= va_arg (args
, char *);
205 vsprintf (buf
, fmt
, args
);
208 merge
= Tcl_Merge (2, v
);
209 Tcl_Eval (gdbtk_interp
, merge
);
215 * The rest of this file contains the start-up, and event handling code for gdbtk.
219 * This cleanup function is added to the cleanup list that surrounds the Tk
220 * main in gdbtk_init. It deletes the Tcl interpreter.
224 cleanup_init (ignored
)
227 if (gdbtk_interp
!= NULL
)
228 Tcl_DeleteInterp (gdbtk_interp
);
232 /* Come here during long calculations to check for GUI events. Usually invoked
233 via the QUIT macro. */
238 /* Tk_DoOneEvent (TK_DONT_WAIT|TK_IDLE_EVENTS); */
245 static int first
= 1;
246 /*TclDebug ("Starting timer....");*/
249 /* first time called, set up all the structs */
251 sigemptyset (&nullsigmask
);
253 act1
.sa_handler
= x_event
;
254 act1
.sa_mask
= nullsigmask
;
257 act2
.sa_handler
= SIG_IGN
;
258 act2
.sa_mask
= nullsigmask
;
261 it_on
.it_interval
.tv_sec
= 0;
262 it_on
.it_interval
.tv_usec
= 250000; /* .25 sec */
263 it_on
.it_value
.tv_sec
= 0;
264 it_on
.it_value
.tv_usec
= 250000;
266 it_off
.it_interval
.tv_sec
= 0;
267 it_off
.it_interval
.tv_usec
= 0;
268 it_off
.it_value
.tv_sec
= 0;
269 it_off
.it_value
.tv_usec
= 0;
272 if (!gdbtk_timer_going
)
274 sigaction (SIGALRM
, &act1
, NULL
);
275 setitimer (ITIMER_REAL
, &it_on
, NULL
);
276 gdbtk_timer_going
= 1;
283 if (gdbtk_timer_going
)
285 gdbtk_timer_going
= 0;
286 /*TclDebug ("Stopping timer.");*/
287 setitimer (ITIMER_REAL
, &it_off
, NULL
);
288 sigaction (SIGALRM
, &act2
, NULL
);
292 /* gdbtk_init installs this function as a final cleanup. */
295 gdbtk_cleanup (dummy
)
298 Tcl_Eval (gdbtk_interp
, "gdbtk_cleanup");
301 struct ide_event_handle
*h
= (struct ide_event_handle
*) dummy
;
302 ide_interface_deregister_all (h
);
308 /* Initialize gdbtk. This involves creating a Tcl interpreter,
309 * defining all the Tcl commands that the GUI will use, pointing
310 * all the gdb "hooks" to the correct functions,
311 * and setting the Tcl auto loading environment so that we can find all
312 * the Tcl based library files.
319 struct cleanup
*old_chain
;
320 char *lib
, *gdbtk_lib
, *gdbtk_lib_tmp
, *gdbtk_file
;
322 Tcl_Obj
*auto_path_elem
, *auto_path_name
;
325 /* start-sanitize-ide */
326 struct ide_event_handle
*h
;
329 /* end-sanitize-ide */
332 /* If there is no DISPLAY environment variable, Tk_Init below will fail,
333 causing gdb to abort. If instead we simply return here, gdb will
334 gracefully degrade to using the command line interface. */
337 if (getenv ("DISPLAY") == NULL
)
341 old_chain
= make_cleanup ((make_cleanup_func
) cleanup_init
, 0);
343 /* First init tcl and tk. */
344 Tcl_FindExecutable (argv0
);
345 gdbtk_interp
= Tcl_CreateInterp ();
348 Tcl_InitMemory (gdbtk_interp
);
352 error ("Tcl_CreateInterp failed");
354 if (Tcl_Init(gdbtk_interp
) != TCL_OK
)
355 error ("Tcl_Init failed: %s", gdbtk_interp
->result
);
358 /* For the IDE we register the cleanup later, after we've
359 initialized events. */
360 make_final_cleanup (gdbtk_cleanup
, NULL
);
363 /* Initialize the Paths variable. */
364 if (ide_initialize_paths (gdbtk_interp
, "gdbtcl") != TCL_OK
)
365 error ("ide_initialize_paths failed: %s", gdbtk_interp
->result
);
368 /* start-sanitize-ide */
369 /* Find the directory where we expect to find idemanager. We ignore
370 errors since it doesn't really matter if this fails. */
371 libexecdir
= Tcl_GetVar2 (gdbtk_interp
, "Paths", "libexecdir", TCL_GLOBAL_ONLY
);
375 h
= ide_event_init_from_environment (&errmsg
, libexecdir
);
376 make_final_cleanup (gdbtk_cleanup
, h
);
379 Tcl_AppendResult (gdbtk_interp
, "can't initialize event system: ", errmsg
,
381 fprintf(stderr
, "WARNING: ide_event_init_client failed: %s\n", gdbtk_interp
->result
);
383 Tcl_SetVar (gdbtk_interp
, "IDE_ENABLED", "0", 0);
387 if (ide_create_tclevent_command (gdbtk_interp
, h
) != TCL_OK
)
388 error ("ide_create_tclevent_command failed: %s", gdbtk_interp
->result
);
390 if (ide_create_edit_command (gdbtk_interp
, h
) != TCL_OK
)
391 error ("ide_create_edit_command failed: %s", gdbtk_interp
->result
);
393 if (ide_create_property_command (gdbtk_interp
, h
) != TCL_OK
)
394 error ("ide_create_property_command failed: %s", gdbtk_interp
->result
);
396 if (ide_create_build_command (gdbtk_interp
, h
) != TCL_OK
)
397 error ("ide_create_build_command failed: %s", gdbtk_interp
->result
);
399 if (ide_create_window_register_command (gdbtk_interp
, h
, "gdb-restore")
401 error ("ide_create_window_register_command failed: %s",
402 gdbtk_interp
->result
);
404 if (ide_create_window_command (gdbtk_interp
, h
) != TCL_OK
)
405 error ("ide_create_window_command failed: %s", gdbtk_interp
->result
);
407 if (ide_create_exit_command (gdbtk_interp
, h
) != TCL_OK
)
408 error ("ide_create_exit_command failed: %s", gdbtk_interp
->result
);
410 if (ide_create_help_command (gdbtk_interp
) != TCL_OK
)
411 error ("ide_create_help_command failed: %s", gdbtk_interp
->result
);
414 if (ide_initialize (gdbtk_interp, "gdb") != TCL_OK)
415 error ("ide_initialize failed: %s", gdbtk_interp->result);
418 Tcl_SetVar (gdbtk_interp
, "IDE_ENABLED", "1", 0);
420 /* end-sanitize-ide */
422 Tcl_SetVar (gdbtk_interp
, "IDE_ENABLED", "0", 0);
425 /* We don't want to open the X connection until we've done all the
426 IDE initialization. Otherwise, goofy looking unfinished windows
427 pop up when ILU drops into the TCL event loop. */
429 if (Tk_Init(gdbtk_interp
) != TCL_OK
)
430 error ("Tk_Init failed: %s", gdbtk_interp
->result
);
432 if (Itcl_Init(gdbtk_interp
) == TCL_ERROR
)
433 error ("Itcl_Init failed: %s", gdbtk_interp
->result
);
434 Tcl_StaticPackage(gdbtk_interp
, "Tktable", Tktable_Init
,
435 (Tcl_PackageInitProc
*) NULL
);
437 if (Tix_Init(gdbtk_interp
) != TCL_OK
)
438 error ("Tix_Init failed: %s", gdbtk_interp
->result
);
439 Tcl_StaticPackage(gdbtk_interp
, "Tktable", Tktable_Init
,
440 (Tcl_PackageInitProc
*) NULL
);
442 if (Tktable_Init(gdbtk_interp
) != TCL_OK
)
443 error ("Tktable_Init failed: %s", gdbtk_interp
->result
);
445 Tcl_StaticPackage(gdbtk_interp
, "Tktable", Tktable_Init
,
446 (Tcl_PackageInitProc
*) NULL
);
448 * These are the commands to do some Windows Specific stuff...
452 if (ide_create_messagebox_command (gdbtk_interp
) != TCL_OK
)
453 error ("messagebox command initialization failed");
454 /* On Windows, create a sizebox widget command */
455 if (ide_create_sizebox_command (gdbtk_interp
) != TCL_OK
)
456 error ("sizebox creation failed");
457 if (ide_create_winprint_command (gdbtk_interp
) != TCL_OK
)
458 error ("windows print code initialization failed");
459 /* start-sanitize-ide */
460 /* An interface to ShellExecute. */
461 if (ide_create_shell_execute_command (gdbtk_interp
) != TCL_OK
)
462 error ("shell execute command initialization failed");
463 /* end-sanitize-ide */
464 if (ide_create_win_grab_command (gdbtk_interp
) != TCL_OK
)
465 error ("grab support command initialization failed");
466 /* Path conversion functions. */
467 if (ide_create_cygwin_path_command (gdbtk_interp
) != TCL_OK
)
468 error ("cygwin path command initialization failed");
472 * This adds all the Gdbtk commands.
475 if (Gdbtk_Init(gdbtk_interp
) != TCL_OK
)
477 error("Gdbtk_Init failed: %s", gdbtk_interp
->result
);
480 Tcl_StaticPackage(gdbtk_interp
, "Gdbtk", Gdbtk_Init
, NULL
);
482 /* This adds all the hooks that call up from the bowels of gdb
483 * back into Tcl-land...
488 /* Add a back door to Tk from the gdb console... */
490 add_com ("tk", class_obscure
, tk_command
,
491 "Send a command directly into tk.");
493 /* find the gdb tcl library and source main.tcl */
495 gdbtk_lib
= getenv ("GDBTK_LIBRARY");
498 if (access ("gdbtcl/main.tcl", R_OK
) == 0)
499 gdbtk_lib
= "gdbtcl";
501 gdbtk_lib
= GDBTK_LIBRARY
;
504 gdbtk_lib_tmp
= xstrdup (gdbtk_lib
);
507 /* see if GDBTK_LIBRARY is a path list */
508 lib
= strtok (gdbtk_lib_tmp
, GDBTK_PATH_SEP
);
510 auto_path_name
= Tcl_NewStringObj ("auto_path", -1);
514 auto_path_elem
= Tcl_NewStringObj (lib
, -1);
515 if (Tcl_ObjSetVar2 (gdbtk_interp
, auto_path_name
, NULL
, auto_path_elem
,
516 TCL_GLOBAL_ONLY
| TCL_APPEND_VALUE
| TCL_LIST_ELEMENT
) == NULL
)
518 fputs_unfiltered (Tcl_GetVar (gdbtk_interp
, "errorInfo", 0), gdb_stderr
);
523 gdbtk_file
= concat (lib
, "/main.tcl", (char *) NULL
);
524 if (access (gdbtk_file
, R_OK
) == 0)
527 Tcl_SetVar (gdbtk_interp
, "GDBTK_LIBRARY", lib
, 0);
531 while ((lib
= strtok (NULL
, ":")) != NULL
);
533 free (gdbtk_lib_tmp
);
534 Tcl_DecrRefCount(auto_path_name
);
538 /* Try finding it with the auto path. */
540 static const char script
[] ="\
541 proc gdbtk_find_main {} {\n\
542 global auto_path GDBTK_LIBRARY\n\
543 foreach dir $auto_path {\n\
544 set f [file join $dir main.tcl]\n\
545 if {[file exists $f]} then {\n\
546 set GDBTK_LIBRARY $dir\n\
554 if (Tcl_GlobalEval (gdbtk_interp
, (char *) script
) != TCL_OK
)
556 fputs_unfiltered (Tcl_GetVar (gdbtk_interp
, "errorInfo", 0), gdb_stderr
);
560 if (gdbtk_interp
->result
[0] != '\0')
562 gdbtk_file
= xstrdup (gdbtk_interp
->result
);
569 fputs_unfiltered_hook
= NULL
; /* Force errors to stdout/stderr */
570 if (getenv("GDBTK_LIBRARY"))
572 fprintf_unfiltered (stderr
, "Unable to find main.tcl in %s\n",getenv("GDBTK_LIBRARY"));
573 fprintf_unfiltered (stderr
,
574 "Please set GDBTK_LIBRARY to a path that includes the GDB tcl files.\n");
578 fprintf_unfiltered (stderr
, "Unable to find main.tcl in %s\n", GDBTK_LIBRARY
);
579 fprintf_unfiltered (stderr
, "You might want to set GDBTK_LIBRARY\n");
584 /* Defer setup of fputs_unfiltered_hook to near the end so that error messages
585 prior to this point go to stdout/stderr. */
587 fputs_unfiltered_hook
= gdbtk_fputs
;
589 /* start-sanitize-tclpro */
590 #ifdef TCLPRO_DEBUGGER
592 Tcl_DString source_cmd
;
594 Tcl_DStringInit (&source_cmd
);
595 Tcl_DStringAppend (&source_cmd
,
596 "if {[info exists env(DEBUG_STUB)]} {source $env(DEBUG_STUB); " -1);
597 Tcl_DStringAppend (&source_cmd
, "debugger_init; debugger_eval {source {", -1);
598 Tcl_DStringAppend (&source_cmd
, gdbtk_file
, -1);
599 Tcl_DStringAppend (&source_cmd
, "}}} else {source {", -1);
600 Tcl_DStringAppend (&source_cmd
, gdbtk_file
, -1);
601 Tcl_DStringAppend (&source_cmd
, "}}", -1);
602 if (Tcl_GlobalEval (gdbtk_interp
, Tcl_DStringValue (&source_cmd
)) != TCL_OK
)
604 /* end-sanitize-tclpro */
605 if (Tcl_EvalFile (gdbtk_interp
, gdbtk_file
) != TCL_OK
)
606 /* start-sanitize-tclpro */
608 /* end-sanitize-tclpro */
612 /* Force errorInfo to be set up propertly. */
613 Tcl_AddErrorInfo (gdbtk_interp
, "");
615 msg
= Tcl_GetVar (gdbtk_interp
, "errorInfo", TCL_GLOBAL_ONLY
);
617 fputs_unfiltered_hook
= NULL
; /* Force errors to stdout/stderr */
620 MessageBox (NULL
, msg
, NULL
, MB_OK
| MB_ICONERROR
| MB_TASKMODAL
);
622 fputs_unfiltered (msg
, gdb_stderr
);
627 /* start-sanitize-tclpro */
628 #ifdef TCLPRO_DEBUGGER
629 Tcl_DStringFree(&source_cmd
);
632 /* end-sanitize-tclpro */
635 /* start-sanitize-ide */
636 /* Don't do this until we have initialized. Otherwise, we may get a
637 run command before we are ready for one. */
638 if (ide_run_server_init (gdbtk_interp
, h
) != TCL_OK
)
639 error ("ide_run_server_init failed: %s", gdbtk_interp
->result
);
640 /* end-sanitize-ide */
645 /* Now source in the filename provided by the --tclcommand option.
646 This is mostly used for the gdbtk testsuite... */
648 if (gdbtk_source_filename
!= NULL
)
650 char *s
= "after idle source ";
651 char *script
= concat (s
, gdbtk_source_filename
, (char *) NULL
);
652 Tcl_Eval (gdbtk_interp
, script
);
653 free (gdbtk_source_filename
);
658 discard_cleanups (old_chain
);
661 /* gdbtk_test is used in main.c to validate the -tclcommand option to
662 gdb, which sources in a file of tcl code after idle during the
663 startup procedure. */
666 gdbtk_test (filename
)
669 if (access (filename
, R_OK
) != 0)
672 gdbtk_source_filename
= xstrdup (filename
);
676 /* Come here during initialize_all_files () */
683 /* Tell the rest of the world that Gdbtk is now set up. */
685 init_ui_hook
= gdbtk_init
;
687 (void) FreeConsole ();
693 DWORD ft
= GetFileType (GetStdHandle (STD_INPUT_HANDLE
));
703 cygwin32_attach_handle_to_fd ("/dev/conin", 0,
704 GetStdHandle (STD_INPUT_HANDLE
),
706 cygwin32_attach_handle_to_fd ("/dev/conout", 1,
707 GetStdHandle (STD_OUTPUT_HANDLE
),
709 cygwin32_attach_handle_to_fd ("/dev/conout", 2,
710 GetStdHandle (STD_ERROR_HANDLE
),
719 tk_command (cmd
, from_tty
)
725 struct cleanup
*old_chain
;
727 /* Catch case of no argument, since this will make the tcl interpreter dump core. */
729 error_no_arg ("tcl command to interpret");
731 retval
= Tcl_Eval (gdbtk_interp
, cmd
);
733 result
= strdup (gdbtk_interp
->result
);
735 old_chain
= make_cleanup (free
, result
);
737 if (retval
!= TCL_OK
)
740 printf_unfiltered ("%s\n", result
);
742 do_cleanups (old_chain
);
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